There is no single official longest word in the world, because the answer depends on what you count as a word. Among dictionary words, English tops out at 45 letters with a lung disease. Count constructed words and Turkish reaches 70. Count chemical names and one protein runs to 189,819 letters.
Below you will find the record holder in 12 major languages, with an exact letter count, a plain-English meaning and an honest label for each: real dictionary word, poet’s invention, repealed law or grammar stunt. Some of these words were built on purpose just to win this contest, and those stories are the best part. Explore our translation services services for details.
Key Takeaways
- The longest word in a major English dictionary is pneumonoultramicroscopicsilicovolcanoconiosis, a 45-letter word coined by a puzzle fan in 1935.
- Germany’s famous 63-letter beef labeling law was a real legal title, but it was repealed in 2013 and is no longer in force.
- Turkish and Finnish build very long words by stacking suffixes or joining nouns, so their “records” are really demonstrations of grammar.
- French, Spanish, Dutch and Swedish have modest champions of 23 to 35 letters that you can actually find in a dictionary.
- Place names and chemical names can be far longer, but most lexicographers do not treat them as ordinary words.
What Is the Longest Word in the World?
It depends on the rules. If any string of letters with a meaning counts, the winner is the full chemical name of the protein titin. Written out as a chain of amino acids, it contains 189,819 letters. Dictionary makers treat names like this as verbal formulas, not words, so you will not find it in any dictionary.
If you only accept words printed in a major dictionary, the numbers shrink fast. English peaks at 45 letters and Portuguese at 46, both for the same invented disease name. Most everyday languages have a longest dictionary word somewhere between 20 and 35 letters.
That is why any fair list has to say what kind of word each entry is. We sorted ours into four types: Explore our Latin roots behind words for details.
- Dictionary words: listed in a respected dictionary and used by real people.
- Coined words: invented by a writer or a puzzle fan, sometimes adopted by dictionaries later.
- Technical and legal terms: real, but confined to medicine, the military or the statute book.
- Constructed words: grammatically valid show-off pieces that nobody uses in conversation.
The Longest Words in 12 Major Languages
Every letter count below was checked by computer, not by squinting. Accented letters such as ü, ó and ş count as one letter each.
| Language | Longest word | Letters | What it means | Type of word |
|---|---|---|---|---|
| 1. English | pneumonoultramicroscopicsilicovolcanoconiosis | 45 | A lung disease caused by inhaling very fine silica dust | Coined in 1935, now in dictionaries |
| 2. German | Rindfleischetikettierungsüberwachungsaufgabenübertragungsgesetz | 63 | Beef labeling supervision duties delegation law | Real law title, repealed in 2013 |
| 3. French | anticonstitutionnellement | 25 | In a way that is contrary to the constitution | Dictionary word |
| 4. Spanish | electroencefalografista | 23 | A specialist in electroencephalography (recording brain activity) | Dictionary word |
| 5. Italian | precipitevolissimevolmente | 26 | In an extremely hasty way | Coined by a poet, now in dictionaries |
| 6. Portuguese | pneumoultramicroscopicossilicovulcanoconiótico | 46 | Relating to, or suffering from, the lung disease in the English entry | Technical term borrowed from the English coinage |
| 7. Dutch | meervoudigepersoonlijkheidsstoornis | 35 | Multiple personality disorder | Dictionary word (medical) |
| 8. Russian | превысокомногорассмотрительствующий | 35 | Roughly “most highly and greatly considerate,” an old bureaucratic honorific | Historical word, rarely seen today |
| 9. Turkish | muvaffakiyetsizleştiricileştiriveremeyebileceklerimizdenmişsinizcesine | 70 | “As though you are from those whom we may not be able to easily make into a maker of unsuccessful ones” | Constructed to show off Turkish grammar |
| 10. Swedish | realisationsvinstbeskattning | 28 | Capital gains taxation | Dictionary word |
| 11. Polish | konstantynopolitańczykowianeczka | 32 | The daughter of a man from Constantinople | Playful constructed word |
| 12. Finnish | lentokonesuihkuturbiinimoottoriapumekaanikkoaliupseerioppilas | 61 | Airplane jet turbine engine auxiliary mechanic non-commissioned officer student | Military compound, no longer in use |
Notice how few of these are plain dictionary words. The honest dictionary champions (French, Spanish, Dutch and Swedish) are among the shortest words on the list.
The Stories Behind the Most Famous Long Words
English: a word invented to win
The 45-letter English champion sounds like serious medicine, but it began as a joke. Everett M. Smith, president of the National Puzzlers’ League, coined it in 1935 to be the longest word in English. It later entered dictionaries, and Merriam-Webster defines it as a lung disease caused by inhaling very fine silicate or quartz dust. Doctors simply say silicosis.
Portuguese borrowed the idea and went one letter further. Its 46-letter adjective describes a person suffering from that same disease, and the Houaiss dictionary recorded it in 2001. The longest non-technical Portuguese word is the 29-letter anticonstitucionalissimamente, “in a very unconstitutional way.” Explore our how languages evolve over time for details.
German: the law that lost its title
German glues nouns together, which Mark Twain called “alphabetical processions.” The 63-letter star of this list was the short title of a 1999 law in the state of Mecklenburg-Vorpommern. It handed over the job of monitoring beef labeling during the mad cow disease scare. The complete short title was even longer, with a hyphenated element about cattle marking in front.
The law was repealed in 2013, so the word no longer names anything in force. German has not run out of material, though. A list of the longest words in the Duden corpus is headed by a 67-letter regulation about who may approve property sales. For gentler examples, see our post on German words with no English translation.
French, Spanish and Italian: dictionary favorites
The classic French answer is anticonstitutionnellement. It has 25 letters, and the Académie française dictionary defines it as “contrary to the Constitution.”
Spanish keeps things short. The longest entry in the Royal Spanish Academy’s dictionary is electroencefalografista, a 23-letter specialist in brain wave recordings. Longer words circulate online, such as a 33-letter “fear of long words,” but the Academy does not list them. Explore our language variation across regions for details.
Italy’s entry is a deliberate joke. The 26-letter precipitevolissimevolmente is usually credited to the poet Francesco Moneti, who is said to have coined it in 1677 so that one word would fill an entire 11-syllable line of verse. It bends the rules of Italian grammar, yet the Treccani dictionary lists it as a humorous word.
Why Do Some Languages Build Such Long Words?
Two habits explain almost every giant on the list: compounding and agglutination.
Compounding means joining whole words with no spaces. German, Dutch, Swedish and Finnish all do it. English would write “capital gains taxation” as three words; Swedish writes one. The Finnish 61-letter entry is simply a chain of nouns describing a trainee mechanic’s military rank.
Agglutination means stacking suffixes onto a root, each adding one piece of meaning. The 70-letter Turkish word starts with muvaffakiyet (“success”) and adds more than a dozen endings for ideas like “without,” “become,” “able,” “our” and “as if.” It was written for a made-up story to prove the point. The longest words in Turkish dictionaries have only 20 letters. Explore our professional Turkish translation services for details.
Polish and Russian show a third route: playful or ceremonial word building. The Polish entry is a tongue twister that stretches “Constantinople” into a daughter’s nickname, and you will not find it in standard dictionaries. The Russian one is an antique form of address for officials that Guinness World Records cited in 2003.
Do Place Names and Made-Up Words Count?
Most record keepers put them in a separate league. They are real strings of letters with real meanings, but nobody uses them the way they use “table” or “translate.”
| Word | Letters | What it is |
|---|---|---|
| Taumatawhakatangihangakoauauotamateaturipukakapikimaungahoronukupokaiwhenuakitanatahu | 85 | Place name: a hill in Hawke’s Bay, New Zealand (Māori) |
| Grundstücksverkehrsgenehmigungszuständigkeitsübertragungsverordnung | 67 | German legal compound, the longest in the Duden text corpus |
| Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch | 58 | Place name: a village in Wales, lengthened in the 1800s as a publicity stunt |
| supercalifragilisticexpialidocious | 34 | Invented for fun and made famous by the film Mary Poppins |
| floccinaucinihilipilification | 29 | English: the act of estimating something as worthless |
| antidisestablishmentarianism | 28 | English: opposition to removing a church’s official state status |
The New Zealand hill name tells a story about a man named Tamatea who played his flute there for a loved one. The Welsh village name counts 58 letters in English but 51 in Welsh, because “ll” and “ch” are single letters in the Welsh alphabet. Even counting letters, it turns out, is a translation problem.
What Long Words Teach Us About Translation
A long word is rarely long in two languages at once. One Swedish word becomes three English words, and one Turkish word can become an entire English sentence. That is why translated documents often grow or shrink, and why forms, certificates and subtitles sometimes need their layout adjusted after translation. Explore our expert French translation services for details.
It is also why word-for-word swaps fail. A translator has to unpack a compound, understand each part and rebuild the meaning naturally in the target language. Legal and medical compounds deserve particular care, since a single misread element can change what a clause or diagnosis says. If you have paperwork full of jaw-breaking terms, our human translators handle translation in a wide range of languages. For more tongue twisters, read about the hardest languages to learn.
Frequently Asked Questions
What is the longest word in the world?
There is no single agreed winner. The longest string usually cited is the full chemical name of the protein titin, at 189,819 letters, but lexicographers consider chemical names formulas, not words. The longest word in a major English dictionary has 45 letters, and a constructed Turkish word reaches 70 letters. The answer changes with the rules you set.
What is the longest word in English?
The longest word found in major English dictionaries is pneumonoultramicroscopicsilicovolcanoconiosis, with 45 letters. It names a lung disease caused by breathing in very fine silica dust. The word was coined in 1935 by Everett M. Smith, president of the National Puzzlers’ League, specifically to be the longest English word, so many people consider it a stunt.
Is the longest German word still in use?
No. The 63-letter Rindfleischetikettierungsüberwachungsaufgabenübertragungsgesetz was the title of a 1999 law in Mecklenburg-Vorpommern about delegating beef labeling checks. The law was repealed in 2013, which retired the word from official use. German can always create new giants by compounding, and the Duden dictionary publisher has recorded a 67-letter legal term in its text corpus. Explore our multilingual document translation for details.
Which language has the longest words?
Languages that compound or stack suffixes freely can make words of almost any length. Turkish, Finnish and German are well known for this. The record breakers are legal titles, military ranks or examples built to show what the grammar allows, which is why dictionary words are a fairer comparison.
What is the longest word in Spanish?
The longest word in the Royal Spanish Academy’s dictionary is electroencefalografista, with 23 letters. It means a person who specializes in electroencephalography, the recording of electrical activity in the brain. You may see longer candidates online, including a 33-letter word for the fear of long words, but those are not listed in the Academy’s dictionary.
Need Help With Words of Any Length?
Whether your document contains a 63-letter legal term or a simple birth date, our human translators will carry the meaning across accurately. Chat with us for a quote, or call 1-800-230-7918 to talk through your project.
